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  1. Oxia Palus region of Mars
  2. Three tropical cyclones active in the Atlantic Ocean basin
  3. US Soldiers Attach Sling Load Ropes To An Army CH-47 Chinook
  4. Satellite view of the eye of Hurricane Irene as it enters the Bahamas
  5. A military working dog handler conducts physical training in Afghanistan
  6. Promise: Inspirational Quote and Motivational Poster
  7. Barred Spiral Galaxy NGC 1300
  8. Military Sealift Command dry cargo and ammunition ship USNS Washington Chambers
  9. A senior drill instructor inspects a recruits rifle for cleanliness
  10. Soldiers set up a security outpost during Operation Desert Storm
  11. Aircraft carrier USS Ronald Reagan transits Pearl Harbor into Hawaii
  12. A BQM-167A Subscale Aerial Target is ready for launch
  13. A P-51D Mustang parked on the flight line
  14. Freedom: Inspirational Quote and Motivational Poster
  15. US Army Paratrooper Fires An M2 50-Caliber Machine Gun Atop A Humvee
  16. A Special Warfare Combatantcraft Crewman reloading an M2 Heavy Barrel machine gun
  17. St Louis Missouri
  18. A UH60 Blackhawk crew chief holds an M240G medium machine
  19. The amphibious assault ship USS Peleliu in transit in the Pacific Ocean
  20. Firefighters Battle A Simulated Aircraft Fire
  21. Artists Conception of a Kuiper Belt Object
  22. USS Nautilus slips into the Thames River
  23. A Standard Missile Three is launched from vertical launch system aboard USS Lake Erie
  24. Space Shuttle Atlantis
  25. Cougar HEV Mine Resistant Ambush Protected vehicles
  26. Boise Idaho
  27. A US Army AH-64D Longbow Apache
  28. The U.S. Air Force Thunderbirds fly in formation
  29. A C 17 Globemaster III sits in a hangar at McChord Field Air Force Base, Washington
  30. Boston Massachusetts
  31. Aerial view of military ships moored at Joint Base Pearl Harbor-Hickam, Hawaii
  32. Pledge: Inspirational Quote and Motivational Poster
  33. Close-up of the Medal of Honor award
  34. An MH53E Sea Stallion helicopter preparing to lift an M777 105mm lightweight Howitzer
  35. The International Space Station in orbit above Earth
  36. Global mosaic of Mars
  37. A CH-47 Chinook prepares to land
  38. An Honor Guard member renders a salute during a burial at sea ceremony
  39. An M1A1 Main Battle Tank
  40. Several chief petty officers combination covers lined up on a table
  41. A US Air Force F-16C Fighting Falcon in flight over Afghanistan
  42. An F/A-18F Super Hornet taking off from USS Nimitz
  43. The International Space Station backdropped by a colorful Earth
  44. US Air Force Airmen salute the Captain of an aircraft
  45. US Navy Sailors attend an establishment ceremony
  46. An EA 6B Prowler catches an arresting wire during landing
  47. The Cadet Chapel at the US Air Force Academy in Colorado Springs, Colorado
  48. Conceptual image of DNA